EP0381326A2 - Telefonhandapparat - Google Patents

Telefonhandapparat Download PDF

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Publication number
EP0381326A2
EP0381326A2 EP90300388A EP90300388A EP0381326A2 EP 0381326 A2 EP0381326 A2 EP 0381326A2 EP 90300388 A EP90300388 A EP 90300388A EP 90300388 A EP90300388 A EP 90300388A EP 0381326 A2 EP0381326 A2 EP 0381326A2
Authority
EP
European Patent Office
Prior art keywords
handset
user
caller
telephone
different
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP90300388A
Other languages
English (en)
French (fr)
Inventor
Timothy Buisseret
John R. Pickin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ferranti Creditphone Ltd
Original Assignee
Ferranti Creditphone Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ferranti Creditphone Ltd filed Critical Ferranti Creditphone Ltd
Publication of EP0381326A2 publication Critical patent/EP0381326A2/de
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • H04M1/733—Cordless telephones with a plurality of base stations connected to a plurality of lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/663—Preventing unauthorised calls to a telephone set
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/57—Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set

Definitions

  • This invention relates to a handset for communicating by radio with a base station in a cordless telephone system.
  • a known cordless telephone system comprises a plurality of fixed base stations which are connected to the public switched telephone network (PSTN). Subscribers to the system have cordless telephones in the form of portable handsets which are capable of establishing radio communication with an in-range base station.
  • the radio communication between the base stations and handsets may be in the form of analogue or digital modulation of a carrier.
  • Each handset is accorded an identification number which, on recognition and acceptance by a base station, enables a call to be set up between the base station and the handset.
  • a single base station can establish communication with a plurality of authorised handsets.
  • An incoming call from the PSTN to the base station radiates a signal which initiates ringing of all the handsets which are authorised to use that base station. Hence, calls may be made and received by the users of the authorised handsets.
  • the base station may alternatively be located in a public place and be equipped to receive calls from all handsets which have authorised account codes.
  • This system is known as a telepoint system and the base station is known as a telepoint.
  • the base station fulfils a similar function to a pay phone and is accessible to all handset owners who are registered on the telepoint service. Any handset user within range of a base station may initiate a call but because the handset is not dedicated to any particular base station it is more difficult to arrange matters such that the handset can receive a call.
  • a telephone handset for communicating by radio with a base station in a cordless telephone system comprises a store into which the handset user may enter the telephone numbers of callers to each of whom the user issues a corresponding paging number so that when a caller dials the paging number the handset receives a paging signal which identifies the caller, means for correlating an incoming paging signal from a caller with the corresponding telephone number stored in the store, and alert means for alerting the user that he is being paged.
  • the user enters the telephone numbers of the callers from whom he wishes to receive calls and issues the callers with respective paging numbers, all of which (when dialled by the callers) are routed to the user's handset so that the called number identifies the caller.
  • the callers who have been issued with these paging numbers are the only people who can page the user, but the user can change the identities of the callers to suit his changing needs, within the constraint imposed by the capacity of the store to retain the different telephone numbers.
  • the alert means may produce an audible warning tone or tones or may alternatively be silent, for example producing a vibration and/or visible display.
  • the form of the alert signal can indicate a pre-assigned caller's identity and/or the urgency of the call.
  • the handset may be capable of dialling the caller by some form of short form dialling, e.g. by the user depressing a key (e.g. the hash key) on a key pad of the handset.
  • a key e.g. the hash key
  • the handset may detect when it is in range of of a base station before dialling the caller, the handset notifying the user by the alert means that the caller's pre-stored number is about to be dialled.
  • a yet further refinement is for the handset not only to detect when it is in range of a base station but also after automatically dialling the pre-stored caller's number to issue a ringing tone to notify the user when the caller answers. To the user this appears to be a incoming call but in reality the user has initiated the call.
  • the incoming paging signal is preferably in binary form.
  • each paging signal consists of three binary bits giving eight possible signals. These eight possible signals may be related to eight different addresses in the store in which the user stores the telephone numbers of eight different callers by whom he wishes to be paged. Alternatively, the eight different addresses in the store could be used to enter four different telephone numbers each with two different levels of urgency, or any other combination of different numbers and different urgency levels which can be accommodated by the eight different signal states.
  • a plurality of base stations 12, 14, 16 is linked by cable to the public switched telephone network (PSTN) 10.
  • PSTN public switched telephone network
  • These base stations are typically located in public places such as railway stations, airports or petrol filling stations.
  • Authorised subscribers to the cordless telephone system have portable handsets 18, 20 22 etc. and each handset is capable of establishing radio communication with any base station which recognises an identification number radiated by the handset and sets up a radio link between the base station and the authorised handset.
  • Each handset may thus initiate a call in a manner well known in cordless telephone systems.
  • the invention is concerned with the way in which the handset is capable of accepting a paging signal to alert the handset user to the fact that a caller is attempting to make communication.
  • Paging is achieved by a paging service with which the cordless telephone system is associated.
  • the paging service has a plurality of transmitters which cover the country.
  • Each handset has a store with addresses into which the handset user initially enters the telephone numbers of callers by whom the user wishes to be paged. These callers may be four in number, for example the user's wife, his business secretary, his solicitor and his stockbroker.
  • the handset store has the capacity to accept eight different numbers so the user is able to assign two different levels of urgency to each caller.
  • the user requests eight paging numbers from the paging service and allocates two paging numbers to each caller.
  • Each caller dials one of the paging numbers to contact the user on a routine basis and the caller dials the other of the paging numbers to contact the user on an urgent basis.
  • the user may alternatively assign the eight different paging numbers to eight different callers, without discrimination as to urgency.
  • the caller When a caller wishes to call the user, the caller dials his pre-assigned paging number which is routed via the PSTN to the paging service. It is converted to a digitally coded signal, routed to the paging service transmitters and radiated by all the paging service transmitters. This is detected as an incoming paging signal to all handsets. The particular user's handset for which the call is intended will match the incoming paging signal to one of the telephone numbers stored in the store in the handset and this will identify the caller. The handset will give the user an audible or visual alert to advise him that he is being paged, the alert indicating the degree of urgency (where appropriate).
  • the method of payment for calls made by the handset can be based on the logging and storage of all calls through the base stations.
  • Such stored call charge information can be transmitted to a central billing computer by means of a modem within the base station upon the receipt of a command from that central billing computer.
  • the telephone system to which the public base station is connected may store the call charge information and provide such information to the operator of the base stations.
  • Yet another method of call payment could be for the handset itself to carry a digital store which has a number in it which is related to prepayments which have been made by the handset user. During the course of a telephone call made via a base station, this store can then be decremented in accordance with the accumulating cost of the call. It is necessary in such a prepayment system to have means for increasing the number in the digital store in accordance with prepayments made by the handset user.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Human Computer Interaction (AREA)
  • Mobile Radio Communication Systems (AREA)
EP90300388A 1989-01-28 1990-01-12 Telefonhandapparat Pending EP0381326A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8901904 1989-01-28
GB898901904A GB8901904D0 (en) 1989-01-28 1989-01-28 Telephone handset

Publications (1)

Publication Number Publication Date
EP0381326A2 true EP0381326A2 (de) 1990-08-08

Family

ID=10650769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90300388A Pending EP0381326A2 (de) 1989-01-28 1990-01-12 Telefonhandapparat

Country Status (4)

Country Link
EP (1) EP0381326A2 (de)
AU (1) AU4877990A (de)
CA (1) CA2008373A1 (de)
GB (1) GB8901904D0 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999013628A1 (en) * 1997-09-09 1999-03-18 Ericsson Mobile Communications (Uk) Limited Telephone apparatus
AU736341B3 (en) * 2000-10-10 2001-07-26 Raphael Aron Mobile phone call filtering

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9020964D0 (en) * 1990-09-26 1990-11-07 Plessey Telecomm Communication system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999013628A1 (en) * 1997-09-09 1999-03-18 Ericsson Mobile Communications (Uk) Limited Telephone apparatus
AU736341B3 (en) * 2000-10-10 2001-07-26 Raphael Aron Mobile phone call filtering

Also Published As

Publication number Publication date
AU4877990A (en) 1990-08-02
CA2008373A1 (en) 1990-07-28
GB8901904D0 (en) 1989-03-15

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